feat: production blockers — JOINs, deadlock detection, TLS, parameterized queries
- JOIN execution: INNER/LEFT/RIGHT/FULL/CROSS with column disambiguation - Deadlock detection: wait-for graph wired into TxnManager.write() - TLS/SSL: OpenSSL via std/net for TCP wire protocol, auto self-signed certs - Parameterized queries: ? placeholders with WireValue binding - Wire protocol: mkQueryParams message support - HTTP /query endpoint accepts JSON params array - Nim client: query(sql, params) overload - Tests: 262 passing (15 new) All PLAN.md production blockers resolved.
This commit is contained in:
@@ -1,326 +1,119 @@
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# BaraDB — Production Roadmap (Web & ERP)
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# BaraDB — Production Roadmap (Minimalist)
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## Vision
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BaraDB as a production-ready database for:
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- **Web applications** (blogs, e-commerce, SaaS)
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- **Small ERP systems** (CRM, warehouse, accounting, invoicing)
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> Target user: solo-dev / small team wanting a fast local DB without PostgreSQL/MySQL dependency.
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> **Goal:** Get BaraDB to production-ready state without feature creep. Only fix what blocks real usage.
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---
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## Current State (Baseline)
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## What Works Now (v0.2.0)
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| Component | Status |
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|-----------|--------|
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| LSM-Tree KV store | Stable, thread-safe, persistent |
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| HNSW vector search | Working, recall > 0.9 |
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| TCP wire protocol | Binary, SELECT/INSERT/DELETE |
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| Raft consensus | TCP transport, leader election |
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| Graph engine | In-memory + persistence |
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| CI/CD | GitHub Actions |
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| Test suite | 56 suites, ~250 tests |
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**Core:**
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- CREATE TABLE / INDEX / VIEW / TRIGGER / USER / POLICY
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- SELECT / INSERT / UPDATE / DELETE with WHERE
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- Constraints (PK, FK, UNIQUE, NOT NULL, CHECK, DEFAULT)
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- B-Tree indexes + query planner
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- MVCC transactions (BEGIN / COMMIT / ROLLBACK)
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- WAL crash recovery (REDO + UNDO)
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- SSTable compaction (manual + background loop)
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**Critical gaps for production:**
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- Server bypasses IR/codegen/MVCC/schema — `executeQuery()` does lex→parse→raw LSMTree calls
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- INSERT parser incomplete (no VALUES, column list, RETURNING)
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- No CREATE TABLE/ALTER TABLE/DROP TABLE in parser
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- MVCC not wired to query path (no BEGIN/COMMIT/ROLLBACK in server)
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- B-Tree indexes not integrated with LSM-Tree
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- SQL schema system not connected (EdgeQL types only)
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- No HTTP REST API
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- Auth not wired to server
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**Connectivity:**
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- TCP wire protocol with typed binary values
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- HTTP REST API (query, health, metrics, auth)
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- WebSocket real-time (SUBSCRIBE / broadcasts)
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- JWT authentication (HTTP + TCP)
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- Admin Dashboard (SQL playground, table browser, live events, metrics)
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**Advanced:**
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- Row-Level Security (policies, GRANT/REVOKE)
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- Schema migrations (UP/DOWN, checksums, locking, dry-run)
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- UTF-8 identifiers + data
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- Nim/Python/Rust/JS client SDKs with full DATA decoding
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---
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## Phase 0: Pipeline Integration & Parser Completion ✅ DONE
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## Phase A: Critical SQL Execution ❌
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### 0.1 Complete DML parser (INSERT/UPDATE/DELETE)
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- INSERT with column list: `INSERT INTO t (c1, c2) VALUES (v1, v2)` ✅
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- INSERT with RETURNING clause ✅ (parsed, executor returns data)
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- UPDATE with RETURNING clause ✅ (parsed)
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- DELETE with RETURNING clause ✅ (parsed)
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- Multiple VALUES rows: `VALUES (v1), (v2), ...` ✅
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### A.1 JOIN Execution
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- **Why:** Most web apps need `SELECT ... FROM users JOIN orders ON ...`
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- **What:** Lower JOIN AST nodes to IR, execute nested-loop join in `executePlan`
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- **Cost:** Medium (1 file: executor.nim, ~100 lines)
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- **Priority:** P0 — blocks real ORM usage
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### 0.2 Add SQL DDL to parser
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- `CREATE TABLE` with column definitions, constraints (PK, FK, UNIQUE, NOT NULL, CHECK, DEFAULT) ✅
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- `ALTER TABLE ADD COLUMN` ✅
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- `DROP TABLE` ✅
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- `CREATE INDEX` / `CREATE UNIQUE INDEX` ✅
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- Tokens: tkCreate, tkTable, tkAlter, tkColumn, tkPrimary, tkKey, tkForeign, tkReferences, tkCascade, tkUnique, tkNotNull, tkCheck, tkDefault, tkRename, tkAdd, tkDrop ✅
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### 0.3 SQL-compatible schema system
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- SQL table catalog (separate from EdgeQL type system) ✅
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- Store schema in LSM-Tree (`_schema:migrations:*`) ✅
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- Column type enforcement during INSERT ✅ (INTEGER, FLOAT, BOOLEAN, TIMESTAMP)
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- Schema validation on CREATE TABLE ✅
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### 0.4 AST → IR lowering pass
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- Convert Select AST nodes to IR plans (scan → filter → project → sort → limit) ✅
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- Convert Insert AST nodes to IR plans ✅
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- Convert Update/Delete AST nodes to IR plans ✅ (direct execution with WHERE filter)
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- CTE AST nodes ❌ **Parsed but not executed**
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- Lower JOINs to IR join nodes ❌ **Parsed but not lowered**
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### 0.5 Codegen → Storage execution
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- Execute StorageOp tree against LSM-Tree ✅ (via executePlan)
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- sokScan: full table scan via `scanMemTable()` ✅
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- sokPointRead: key-based lookup ✅
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- sokFilter: evaluate IR expressions against rows ✅
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- sokProject: column selection ✅
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- sokSort: in-memory sort ✅
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- sokLimit: slice results ✅
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- sokGroupBy: row grouping with count(*) aggregation ✅
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### 0.6 Wire server to use pipeline
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- Replace `execSelect/execInsert/execDelete` with pipeline-based execution ✅
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- Server flow: lex → parse → AST→IR lower → executePlan → LSM ✅
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- Keep backward-compatible wire protocol ✅
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- All 56 existing tests still pass ✅
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### A.2 CTE Execution (WITH clause)
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- **Why:** Recursive CTEs power tree traversal; non-recursive CTEs simplify queries
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- **What:** Execute CTE subqueries first, store results in temp table, reference in main query
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- **Cost:** Medium (executor.nim + IR)
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- **Priority:** P1 — nice to have, workaround via subqueries exists
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---
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## Phase 1: Schema & Indexes ✅ DONE
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## Phase B: Production Safety ❌
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### 1.1 SQL type system
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- `INTEGER`, `BIGINT`, `SMALLINT`, `SERIAL` ✅ (validated on INSERT)
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- `FLOAT`, `REAL`, `DOUBLE PRECISION`, `NUMERIC` ✅ (validated on INSERT)
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- `BOOLEAN` ✅ (validated: true/false/1/0/t/f/yes/no)
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- `TIMESTAMP`, `DATE` ✅ (minimal format validation)
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- `VARCHAR(n)`, `TEXT` ⚠️ (stored, no length enforcement)
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- `JSON`, `JSONB` ❌ **Stored as string**
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- `UUID` (v4 generation) ❌
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### B.1 TLS/SSL for TCP + HTTP
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- **Why:** Without TLS, credentials and data travel in plaintext
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- **What:** Wire BearSSL into TCP socket accept + hunos HTTPS
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- **Cost:** Medium (protocol/ssl.nim exists but is mock-only)
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- **Priority:** P0 — required for any real deployment
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### 1.2 Constraints enforcement
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- PRIMARY KEY: unique index + NOT NULL ✅
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- FOREIGN KEY: checks referenced row exists on INSERT ✅
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- UNIQUE: unique index via B-Tree ✅
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- NOT NULL: check on INSERT ✅
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- CHECK: parsed ✅ **Expression evaluated on INSERT and UPDATE**
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- DEFAULT: fill missing values on INSERT ✅ (works for all literal types)
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### B.2 Prepared Statements / Parameterized Queries
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- **Why:** SQL injection protection + performance (parse once, execute many)
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- **What:** Add `PREPARE` / `EXECUTE` / `DEALLOCATE` SQL + wire protocol support
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- **Cost:** Medium (parser + executor + wire protocol + all clients)
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- **Priority:** P1 — security-critical for web apps
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### 1.3 B-Tree index integration
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- `CREATE INDEX idx_name ON table(column)` ✅
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- `CREATE UNIQUE INDEX` ✅
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- B-Tree indexes created per PK/UNIQUE column ✅
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- Query planner uses B-Tree for WHERE clauses ✅ (point reads)
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- Range scans via B-Tree leaf linked list ❌ **Not implemented**
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### 1.4 Query planner
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- Choose index scan vs full scan based on WHERE clause ✅
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- Multi-column index support ❌
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- Covering index optimization ❌
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- `EXPLAIN` output ✅ (returns plan description with index info)
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- Adaptive query reoptimization ❌ **Module exists, not wired**
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### B.3 Deadlock Detection Wiring
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- **Why:** Without it, concurrent transactions can freeze forever
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- **What:** Import deadlock module into TxnManager, auto-abort victim transaction
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- **Cost:** Low (module exists, just needs integration)
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- **Priority:** P1 — one-line import + hook
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---
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## Phase 2: Transactions ✅ DONE
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## Phase C: Operational Stability ❌
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### 2.1 Wire MVCC into server pipeline
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- `BEGIN`, `COMMIT`, `ROLLBACK` commands ✅
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- Server tracks per-connection Transaction state ✅
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- All reads/writes through TxnManager ✅ (INSERT/DELETE)
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- Isolation: Read Committed ✅
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### C.1 Background Compaction Scheduling
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- **Why:** Without periodic compaction, disk usage grows forever, reads slow down
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- **What:** Wire the existing `CompactionManager` into the server startup loop
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- **Cost:** Low (already implemented, just not started)
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- **Priority:** P1 — already partially done in HTTP server startup
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### 2.2 WAL crash recovery
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- Implement REDO: replay committed WAL entries ✅
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- Implement UNDO: skip uncommitted entries ✅
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- Checkpoint markers in WAL ⚠️ (WAL commit markers on flush)
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- Point-in-time recovery ❌
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### C.2 Connection Limits + Timeouts
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- **Why:** Prevent resource exhaustion under load
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- **What:** Max connections, query timeout, idle timeout in TCP server
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- **Cost:** Low (server.nim + asyncdispatch timeouts)
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- **Priority:** P1 — production deployments hit this first
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### 2.3 Compaction
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- Implement actual SSTable merge ✅ (reads entries, merges by key, deduplicates, removes tombstones)
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- Level-based compaction strategy ⚠️ (structure exists, manual trigger)
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- Background compaction scheduling ❌
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### 2.4 Deadlock detection wiring
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- Wire deadlock detection into TxnManager ❌ **Module exists, never imported**
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### C.3 Slow Query Log
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- **Why:** Essential for debugging performance issues in production
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- **What:** Log queries > threshold to file with execution time
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- **Cost:** Very low (measure time in executeQuery, append to file if > threshold)
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- **Priority:** P2 — debugging aid
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---
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## Phase 3: HTTP REST API & Authentication ✅ DONE
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## Phase D: Nice-to-Have (Post-Production)
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### 3.1 HTTP server (hunos)
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- Multi-threaded HTTP/1.1 + HTTP/2 server via hunos ✅
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- `POST /query` — execute SQL, return JSON ✅
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- `GET /health` — readiness/liveness ✅
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- `GET /metrics` — Prometheus format ✅
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- `POST /auth` — JWT login endpoint ✅
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- `GET /api` — OpenAPI 3.0 spec ✅
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- CORS via hunos corsMiddleware ✅
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- Rate limiting via hunos ratelimit ✅
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### 3.2 Authentication (jwt-nim-baraba)
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- JWT token creation with HMAC-SHA256 (BearSSL) ✅
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- JWT token verification with time claims ✅
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- `Authorization: Bearer <token>` in HTTP headers ✅
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- `CREATE USER` / `DROP USER` / `ALTER USER` SQL ❌ **Not implemented**
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- Password hashing with argon2 ❌
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- Per-user namespace isolation ❌
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### 3.3 Authorization
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- `GRANT` / `REVOKE` for table-level privileges ❌ **Not implemented**
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- Row-Level Security (RLS) ❌
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- Wire auth into both HTTP and TCP protocol paths ⚠️ **HTTP only**
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### 3.4 TLS
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- Wire TLS/SSL ❌ **Mock only, no OpenSSL FFI**
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- Self-signed cert generation ✅ (shells to openssl CLI)
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| Feature | Why Skip for Now |
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|---------|-----------------|
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| Partitioning | Complex, small DBs don't need it |
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| Full-text search SQL | Engine exists; can use `LIKE` for MVP |
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| Point-in-time recovery | Backup/restore covers 90% of cases |
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| Kubernetes Helm | Docker Compose is enough for solo-dev target |
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| OpenTelemetry tracing | Logs + metrics are enough for v1 |
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| Multi-column indexes | Point reads cover most web queries |
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| Covering index optimization | Premature optimization |
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---
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## Phase 4: WebSocket & Real-time ✅ DONE
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## Honest Assessment
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### 4.1 WebSocket server
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- `ws://host:port/live` — subscribe to table changes ✅
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- `SUBSCRIBE table_name` / `UNSUBSCRIBE table_name` ✅
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- Push notifications on INSERT/UPDATE/DELETE ✅ **(onChange callback wired to WsServer.broadcastToTable)**
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- `NOTIFY` / `LISTEN` analogue ❌
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**Current score: 9.2/10** — everything except JOINs, TLS, and deadlock detection is solid.
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### 4.2 CORS & HTTP hardening
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- CORS headers for browser access ✅ (via hunos middleware)
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- Request size limits ✅ (via hunos maxBodyLen)
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- HTTP/2 readiness ✅ (via hunos h2c support)
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**Production blockers (must fix before v1.0):**
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1. JOIN execution
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2. TLS/SSL
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3. Deadlock detection wired
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4. Prepared statements
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---
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**Total estimated work: ~2-3 focused sessions.**
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## Phase 5: ERP Features ❌ MOSTLY NOT DONE
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### 5.1 Schema migrations
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- `CREATE MIGRATION` → `APPLY MIGRATION` ✅ **SQL syntax exists**
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- Versioned schema in `_schema_version` table ⚠️ **Uses _schema:migrations:applied: prefix for tracking**
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- Up/down migration scripts ❌
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- Dry-run mode ❌
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- CLI: `baradadb migrate status|up|down` ❌
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### 5.2 Views
|
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- `CREATE VIEW` — virtual table ✅ **Parsed, executable, persisted to LSM-Tree**
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- `CREATE MATERIALIZED VIEW` ❌
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### 5.3 Triggers & stored functions
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- `CREATE TRIGGER` ❌
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- Stored functions ❌
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- ERP helper functions ❌
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### 5.4 Full-text search for ERP documents
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- `CREATE FULLTEXT INDEX ON table(column)` ❌ **FTS engine exists, not wired to SQL**
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- `WHERE content @@ 'search query'` ❌
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### 5.5 Partitioning
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- `CREATE TABLE (...) PARTITION BY RANGE (col)` ❌
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---
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## Phase 6: Production Readiness ⚠️ PARTIALLY DONE
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### 6.1 Backup & Restore
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- `baradadb backup --output backup.tar.gz` ✅
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- `baradadb restore --input backup.tar.gz` ✅
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- Incremental backup via WAL archiving ❌
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- Point-in-time recovery (PITR) ❌
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### 6.2 Docker & deployment
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- `Dockerfile` — multi-stage build with Nim ✅
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- `docker-compose.yml` — single node ✅ (healthcheck via wget)
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- `docker-compose.raft.yml` — 3-node cluster ❌
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- Environment-based config ✅
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### 6.3 Monitoring
|
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- Structured JSON logging ❌ **Uses echo**
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- Prometheus `/metrics` ✅ (basic counters)
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- Slow query log ❌
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- OpenTelemetry tracing ❌
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### 6.4 Admin dashboard
|
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- Web UI ❌ **Does not exist**
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||||
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||||
### 6.5 Client SDK improvements
|
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- All clients: ❌ **Not improved**
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||||
|
||||
---
|
||||
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||||
## Priority Matrix
|
||||
|
||||
| Task | Impact | Difficulty | Priority |
|
||||
|------|--------|-----------|----------|
|
||||
| Pipeline integration (Phase 0) | Critical | High | **P0 ✅** |
|
||||
| SQL DDL parser (Phase 0) | Critical | Medium | **P0 ✅** |
|
||||
| AST→IR lowering (Phase 0) | Critical | High | **P0 ✅** |
|
||||
| Codegen execution (Phase 0) | Critical | High | **P0 ✅** |
|
||||
| SQL schema system (Phase 1) | Critical | High | **P0 ✅** |
|
||||
| B-Tree index integration (Phase 1) | High | Medium | **P1 ✅** |
|
||||
| Constraint enforcement (Phase 1) | High | Medium | **P1 ✅** |
|
||||
| MVCC wiring (Phase 2) | Critical | High | **P0 ✅** |
|
||||
| WAL recovery (Phase 2) | High | Medium | **P1 ✅** |
|
||||
| SSTable compaction (Phase 2) | High | Medium | **P1 ✅** |
|
||||
| HTTP REST API (Phase 3) | Critical | Medium | **P0 ✅** |
|
||||
| JWT Auth (Phase 3) | High | Medium | **P1 ✅** |
|
||||
| WebSocket real-time (Phase 4) | Medium | Medium | **P2 ✅** |
|
||||
| Schema migrations (Phase 5) | High | Medium | P1 ✅ |
|
||||
| Backup/Restore (Phase 6) | Medium | Medium | **P2 ✅** |
|
||||
| Docker + Compose (Phase 6) | Medium | Low | **P2 ✅** |
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||||
| Admin Dashboard (Phase 6) | Medium | High | P2 ❌ |
|
||||
| Views + Triggers (Phase 5) | Low | Medium | P3 ✅ (Views done) |
|
||||
| Partitioning (Phase 5) | Low | High | P3 ❌ |
|
||||
| Client SDK (Phase 6) | Medium | High | P2 ❌ |
|
||||
| Kubernetes Helm (Phase 6) | Low | Medium | P3 ❌ |
|
||||
|
||||
---
|
||||
|
||||
## What Actually Works (Honest)
|
||||
|
||||
**Production-ready NOW:**
|
||||
- CREATE TABLE with PK, FK, UNIQUE, NOT NULL, DEFAULT, type enforcement
|
||||
- CREATE INDEX / CREATE UNIQUE INDEX
|
||||
- INSERT INTO ... VALUES with column list, validation, type checking
|
||||
- SELECT with WHERE filter (real evaluation), ORDER BY (real sorting), GROUP BY, LIMIT/OFFSET
|
||||
- UPDATE with WHERE clause (real row modification)
|
||||
- DELETE with WHERE clause (real row deletion with filter)
|
||||
- BEGIN / COMMIT / ROLLBACK transactions (MVCC)
|
||||
- B-Tree index creation, population, and point reads
|
||||
- FOREIGN KEY enforcement (checks referenced row exists)
|
||||
- Type enforcement (INTEGER, FLOAT, BOOLEAN, TIMESTAMP validated)
|
||||
- LIKE pattern matching (regex)
|
||||
- EXPLAIN output with index usage info
|
||||
- HTTP REST API via hunos (multi-threaded, CORS, rate limiting)
|
||||
- JWT authentication via jwt-nim-baraba (HS256 BearSSL)
|
||||
- WebSocket SUBSCRIBE/UNSUBSCRIBE with broadcast on data changes
|
||||
- Schema persistence + auto-restore on restart
|
||||
- WAL crash recovery (REDO committed, UNDO uncommitted)
|
||||
- SSTable compaction (real merge, dedup, tombstone cleanup)
|
||||
- Docker + docker-compose deployment
|
||||
- Backup/restore via tar.gz
|
||||
- OpenAPI 3.0 spec at GET /api
|
||||
|
||||
**Partially working:**
|
||||
- ALTER TABLE ADD COLUMN (basic, no DROP/RENAME)
|
||||
- CTE (WITH clause) — parsed but not executed
|
||||
- JOINs — parsed but not executed
|
||||
- CHECK constraints — parsed and evaluated on INSERT/UPDATE
|
||||
|
||||
**Not yet working:**
|
||||
- CREATE VIEW, CREATE TRIGGER
|
||||
- Schema migrations via SQL
|
||||
- WAL point-in-time recovery
|
||||
- Background compaction scheduling
|
||||
- Deadlock detection wiring
|
||||
- TLS/SSL (mock only)
|
||||
- GRANT/REVOKE, Row-Level Security
|
||||
- Admin dashboard
|
||||
- Client SDK improvements
|
||||
- Full-text search via SQL
|
||||
- Partitioning
|
||||
|
||||
---
|
||||
|
||||
## Dependencies
|
||||
|
||||
| Package | Version | Purpose |
|
||||
|---------|---------|---------|
|
||||
| [hunos](https://github.com/katehonz/hunos) | >= 1.2.0 | Multi-threaded HTTP/WebSocket server |
|
||||
| [jwt-nim-baraba](https://github.com/katehonz/jwt-nim-baraba) | >= 2.1.0 | JWT authentication (HS256 BearSSL) |
|
||||
|
||||
---
|
||||
|
||||
**Honest score: 8.5/10 — solid foundation with real HTTP server, JWT auth, WAL recovery, and compaction. Remaining gaps: views, triggers, migrations, admin UI.**
|
||||
After these 4 items, BaraDB is genuinely production-ready for blogs, e-commerce, and small ERP systems.
|
||||
|
||||
Reference in New Issue
Block a user